CoS NWs/Au Hybridized Networks as Efficient Counter Electrodes for Flexible Sensitized Solar Cells

被引：59
作者：
Guo, Wenxi [1 ]
Zhang, Xiaojia [1 ]
Yu, Ruomeng [2 ]
Que, Miaoling [1 ]
Zhang, Zengming [1 ]
Wang, Zhiwei [1 ]
Hua, Qilin [1 ]
Wang, Chunfeng [1 ]
Wang, Zhong Lin [2 ]
Pan, Caofeng [1 ]
机构：
[1] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing, Peoples R China
[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
来源：
ADVANCED ENERGY MATERIALS | 2015年 / 5卷 / 11期
基金：
中国国家自然科学基金;
关键词：
cobalt sulfide; counter electrodes; flexible solar cells; metal nanotrough networks; DOPED INDIUM OXIDE; NANOWIRE NETWORKS; NANOROD ARRAYS; TRANSPARENT; SEMICONDUCTOR; FABRICATION; GRAPHENE; SULFIDE; ANODES; FILMS;
D O I：
10.1002/aenm.201500141
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A newly designed counter electrode (CE) composed of a hybridized structure of Au networks and cobalt sulfide (CoS) nanowire (NW) arrays is presented for flexible dye-sensitized solar cells (DSSCs) and quantum dot-sensitized solar cells (QDSSCs). The sheet resistance of the Au networks electrode is approximate to 10 sq(-1) with a transmittance up to 90%. The CoS NWs/Au hybridized networks show excellent electrocatalytic activity and lower charge transfer resistance toward the reduction of both S-x(2-) ions and I-3(-) ions. The hybridized electrode exhibits remarkable mechanical strength and no obvious changes in morphology and sheet resistance even after 500 bending cycles; 3.13% and 4.73% efficiency are obtained by utilizing CoS/Au hybridized networks as CEs in TiO2 nanotube array (TNAR) based DSSCs and QDSSCs. This work provides a novel approach to fabricate flexible, transparent, conductive, and catalytically active electrodes for QDSSCs and DSSCs and pomotes the development of transparent percolation conductive films for photovoltaics.
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页数：9
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